Previous studies concerning theoretical discovery latency for Bluetooth Low Energy (BLE) have been repeatedly validated on dedicated BLE Systems on Chips (SoCs), but to a much lesser extent on multi-radio SoCs such as those found in smartphones. In this paper, we evaluate neighbor discovery latency and energy consumption across various parameters available on an Android smartphone under API 24 for Bluetooth 4.2. We further investigate the effect of concurrent Wi-Fi traffic on energy consumption and BLE packet reception over advertising channels. We found that average discovery latency can be comparable to what state of the art models predict, while exhibiting higher variability across advertising intervals. Energy consumption deviates from that predicted by the chosen models and Wi-Fi interference tests show a much greater impact on energy consumption and discovery latency when interference traffic involves the BLE scanning activity.
